Your wierdest 'unidentified object'?

[Jolanta Zofia Nowak]

Has anything been giving you grief for a while ID-wise?

I had a year's worth of perplexity over what turned out to be a hot air balloon shadow nr Bristol!

What's YOUR worst case situation?

[SpiderX22]

I've had a few, but I don't remember them all.

The first one had me boggled for like a week, I kept thinking I had to clear my cache, but it wouldn't go away. Then I realized it's the border between Malaysia and Indonesia.

The second one I'm still clueless about. The ocean is pretty clear, and then there's this. Is it just rocks, or a wreckage, or something althogether different?